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What is D ?...


What is D ?

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A
Benzene can be prepared by cyclization of long chain alkanes on heating at `500-550^(@)C` under high pressure in presence of catalyst `Cr_(2)O_(3)` supported on alumina or `Pt-Al_(2)O_(3)` (i.e., catalytic reforming)
`underset("n-hexane")(C_(6)H_(14))overset(Cr_(2)O_(3)//Al_(2)O_(3))underset(underset("at high pressure")("773 K"))rarrunderset(A)(C_(6)H_(6))+4H_(2)`
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AIIMS PREVIOUS YEAR PAPERS-AIIMS 2009-CHEMISTRY
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